UTIL_DecodeICE

/* UTIL_DecodeICE(unsigned char*, int, unsigned char const*) */

void UTIL_DecodeICE(uchar *param_1,int param_2,uchar *param_3)

{
  int iVar1;
  undefined1 *puVar2;
  int iVar3;
  int iVar4;
  IceKey *pIVar5;
  int iVar6;
  int in_GS_OFFSET;
  int iStackY_50;
  undefined1 auStack_40 [4];
  uchar *local_3c;
  undefined1 *local_38;
  int local_34;
  undefined1 *local_30;
  IceKey local_2c [12];
  int local_20;
  
  pIVar5 = (IceKey *)&stack0xffffffb4;
  local_3c = param_1;
  local_20 = *(int *)(in_GS_OFFSET + 0x14);
  if (param_3 != (uchar *)0x0) {
    iStackY_50 = 0x581d2a;
    IceKey::IceKey(local_2c,0);
                    /* try { // try from 00581d34 to 00581dc1 has its CatchHandler @ 00581de5 */
    iStackY_50 = 0x581d39;
    IceKey::set(local_2c,param_3);
    iStackY_50 = 0x581d44;
    iVar3 = IceKey::blockSize();
    iVar1 = -((((iVar3 + -1 + param_2) / iVar3) * iVar3 + 0xfU & 0xfffffff0) + 0x10);
    pIVar5 = local_2c + iVar1 + -0x20;
    local_38 = auStack_40 + iVar1;
    if (param_2 < iVar3) {
      iVar4 = 0;
    }
    else {
      local_34 = -iVar3;
      local_30 = auStack_40 + iVar1;
      iVar6 = param_2 - iVar3;
      do {
        iVar4 = iVar6;
        puVar2 = local_30;
        *(uchar **)(local_2c + iVar1 + -0x1c) = param_1;
        *(undefined1 **)(&stack0xffffffbc + iVar1) = puVar2;
        *(IceKey **)(local_2c + iVar1 + -0x20) = local_2c;
        *(undefined4 *)((int)&iStackY_50 + iVar1) = 0x581d96;
        IceKey::decrypt(*(IceKey **)(local_2c + iVar1 + -0x20),*(uchar **)(local_2c + iVar1 + -0x1c)
                        ,*(uchar **)(&stack0xffffffbc + iVar1));
        local_30 = local_30 + iVar3;
        param_1 = param_1 + iVar3;
        iVar6 = iVar4 + local_34;
      } while (iVar3 <= iVar3 + iVar6);
      iVar4 = param_2 - iVar4;
    }
    *(int *)(&stack0xffffffbc + iVar1) = iVar4;
    *(undefined1 **)(local_2c + iVar1 + -0x1c) = local_38;
    *(uchar **)(local_2c + iVar1 + -0x20) = local_3c;
    *(undefined4 *)((int)&iStackY_50 + iVar1) = 0x581dc2;
    _V_memcpy(*(void **)(local_2c + iVar1 + -0x20),*(void **)(local_2c + iVar1 + -0x1c),
              *(int *)(&stack0xffffffbc + iVar1));
    *(IceKey **)(local_2c + iVar1 + -0x20) = local_2c;
    *(undefined4 *)((int)&iStackY_50 + iVar1) = 0x581dcd;
    IceKey::~IceKey(*(IceKey **)(local_2c + iVar1 + -0x20));
  }
  if (local_20 == *(int *)(in_GS_OFFSET + 0x14)) {
    return;
  }
                    /* WARNING: Subroutine does not return */
  *(undefined **)(pIVar5 + -4) = &UNK_00581dff;
  __stack_chk_fail();
}